7.) Mrs. Lowery has written a book of short stories and wants to begin selling them online. She must pay $25 to set
up her website and she plans to sell the book for $6.50.
Which inequality will Mrs. Lowery use to determine how
many books she must sell if she wants to make a profit <
at least $140?
A)250 < 140 + 6.50c
B)6.50c – 25 > 140
C)25c + 6.500 < 140
D)6.500 > 140 – 25

Consider the following geometry problems in 3-space enter t or f depending on whether the statement is true or false. (you must enter t or f -- true and false will not work.) f equation editorequation editor 1. a plane and a line either intersect or are parallel t equation editorequation editor 2. two planes parallel to a third plane are parallel f equation editorequation editor 3. two lines either intersect or are parallel f equation editorequation editor 4. two planes orthogonal to a third plane are parallel f equation editorequation editor 5. two planes orthogonal to a line are parallel f equation editorequation editor 6. two planes either intersect or are parallel f equation editorequation editor 7. two lines orthogonal to a third line are parallel t equation editorequation editor 8. two lines parallel to a third line are parallel t equation editorequation editor 9. two planes parallel to a line are parallel f equation editorequation editor 10. two lines parallel to a plane are parallel f equation editorequation editor 11. two lines orthogonal to a plane are parallel